Lightweight 11T Mountain Bike Rr Derailleur Pulley Wheel (Black Red)

Aluminum alloy wheel body, lightweight, high strength, anti-rust and . The steel bring has good performance in rolling smoothly with grt stability, low chance of getting chain stuck. Compatible for most of rr derailleur on the market. Ftures: 1. Aluminum alloy wheel body, lightweight,high strength, anti-rust and . 2. The steel bring has good performance inrolling smoothly with grt stability, low chance of getting chain stuck. 3. Compatible for most of rr derailleur on themarket. 4. Fit for 4/5mm roller screw shaft with thescrew shaft adapter. 5. A must-have replacement part for your bike. Specification: Material: Aluminum Alloy, Steel Optional Color: Black Red, Black Type: 11T Fit for most of rr derailleur on the market Size: Approx. 41.5mm/1.63in Weight: Approx.15g/0.53oz PackingList: 1 * Bike Rr Derailleur Pulley 2 * Screw Shaft Adapter Note:  One of the screw shaft adapter has been installed on the pulley.